He was also capped for the Irish Universities against the touring Springboks in April 1965 when the Irish students recorded an historic first ever victory by a team from Ireland over South Africa¸ winning 12-10 at Thomond Park.
He was also selected for a final Irish trial in 1965 and was chosen on an Ireland Under-23 XV. But in 1966, at the age of 24, his playing career was curtailed due to a serious neck injury.
The injury also ended a successful career in athletics during which he was crowned Irish national champion in both track and field.
In 1960 he represented Ireland in the European Student Games in San Sebastian and in 1962 at the age of 20 he was elected to the Central Council of the National Athletics and Cycling Association (NACA) on the platform of advancing unity in Irish athletics.
In his rugby administrative career, Glynn was Chairman of the Connacht senior team selection committee (1988-06), manager of the Connacht team between 1996 and 2000, President of the Connacht Branch in 2000-2001 and from 2000 he has been a member of the IRFU Committee, notably holding the positions as Chairman of the Medical Committee, Chairman of the Disciplinary Appeals Committee and as a member of the Representative Game Committee.
Residing in Galway and married to Margaret, he has two sons, Barry and Richard.